Mitsuda's Procyon Studios recently released the Tsugunai soundtrack in Japan on December 25th. Titled "an cinniuint," the soundtrack became available for international pre-order on January 1st. The soundtrack will not be available in stores, only from the Procyon site.
The soundtrack itself is 2 CDs, with 20 songs on each disc, and retails for 2700 yen ($20.38 USD), plus shipping and handling.
For more information on "an cinniuint," check out Procyon's website.